DMAC-RMII is our newest hardware implementation of a media access control protocol, defined by the IEEE standard. The DMAC-RMII, in cooperation with an external PHY device, enables network functionality in design. This IP Core supports 10BASE-T and 100BASE-TX/FX IEEE 802.3-2002 compliant RMII PHYs.

The DMAC-RMII Core is able to work with the most popular processors available on the market, either 8., 16. and 32 bit data bus, with little or big endian byte order format. Moreover, it provides static configuration of PHY IC, conforming to the IEEE 802.3-2002 standard.  – We’ve always wanted to design the most “user friendly” solutions, that’s why our DMAC-RMII is also technology independent and thus can be implemented in variety of process technologies. – says Jacek Hanke, CEO, DCD-SEMI.  As the Core has been developed for reuse in ASIC and FPGA projects, it’s been implemented in several commercial products already. The design is strictly synchronous with positive-edge clocking, no internal tri-states and with a synchronous reset.
When the configurability is just one part of the elusive puzzle, the compatibility issues become crucial. That’s why the DMAC-RMII IP Core supports 10BASE-T and 100BASE-TX/FX IEEE 802.3 compliant RMII PHYs. As it’s been stated above, Polish IP Core has a Reduced Media Independent Interface (RMII) for connection to external 10/100 Mbps PHY transceivers, which ensures maximum compatibility with a great variety of external CPUs or standard bus controllers. – As the host interface can be configured to work with 8., 16. or 32-bit data bus lengths with big or little endian order format – explains Hanke – the DMAC-RMII is compatible with most modern virtual component interfaces. In addition, AMBA, OCP, OPB and other optional standard interfaces are available, which makes the Core a flexible solution to be utilized in a variety of interface applications, including network devices (eg NICs-Network Interface Cards, routers, switching hubs etc.), embedded microprocessor boards, communication systems and other Systems On Chip (SoC) applications.